Improvement in concrete and tile paving



UNITED STATES PATENT OFFICE.

CORNELIUS BURLEW, OF LOOK HAVEN, PA., ASSIGNOR TO HIMSELF AND THORNTON SMITH, OF WASHINGTON, D. O.

IMPROVEMENT IN CONCRETE AND TILE PAVING.

Specification forming part of Letters Patent No. 68,284, dated August 27, 1867.

This invention consists in preparing, by

a new process, concrete-blocks for paving streets, sidewalks, houses, &c., and in the mode of laying the same.

The following description will enable one skilled in the art to compound and use the same.

To form one hundred parts, take of Gravel 35 parts.

Goal-ashes 10 Hard cinders 10 Sharp coarse sand 20 Water cement 02 Salt... 02

Coal-tar 05 Iron filing 02 Pine-tar 05 Rosin 04 Glue 01 New lime 04 Total .100

To compound these ingredients, I mix the gravel, cinders, coal-ashes, sand, iron filings,

salt, and lime, thoroughly together. Then heat the tar and dissolve the rosin and glue therein, and thoroughly incorporate themixture with the above ingredients. The cement should then be thoroughly mixed through the concrete, and the material then put into molds of proper sizes to form the blocks, and sub jected to a heavy pressure. This work may be done in any good brick-pressing or analogous machine.

The concrete blocks may be colored to any desired shade by adding suitable and ordinary colors, such as are used in making paints.

The blocks are laid upon the ground, or upon a prepared bed of mortar, or stone, or concrete. Hot tar, mixed with sharp sand and cement, is then to be poured into the cracks, and a heavy roller used to level the surface.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The mode, substantially as set forth, of compounding and preparing concrete blocks for paving.

2. The mode of laying pavements by the use of concrete blocks, embedded and united substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of 4 two subscribing witnesses.

, CORNELIUS BURLEW. Witnesses:

THORNTON SMITH, D. P. HOLLOWAY. 

